中文摘要：

为提高矢量传感器阵列的波达方向（DOA）估计精度和减少运算量,提出了基于矢量传感器阵列的实值化求根MUSIC算法。该算法计算量远远小于矢量传感器阵列的MUSIC算法和RootMUSIC算法。通过阵列信号的空间谱,选择合适的引导方位向量。对阵列协方差矩阵进行实值化重构与特征分解,构造蕴含信号源方位信息的多项式,再将阵列的DOA估计转化为多项式的求根问题。仿真实验与相同阵列孔径的声压传感器阵列的对比实验表明,该算法在低信噪比、小快拍数情况下具有更好的估计性能。通过湖试试验验证了该算法具有较强的工程实用性。

英文摘要：

To improve the estimation accuracy of Direction of arrival （DOA） and reduce the computational complexity for acoustic vector sensor array, a new real-valued Root-MUSIC algorithm for acoustic vector sensor array is proposed, the computational complexity of which is less than the traditional MUSIC algorithm and the Root-MUSIC algorithm. The appropriate guiding orientation vector is selected via spatial spectrum of array signal. The real-valued reconstruction and eigen decomposition are performed on covari- ance matrix to construct the polynomial with the location of signals so as to transfer the DOA estimation into the polynomial rooting problem. Simulation results comparing to acoustic pressure sensor array with the same aperture show that the proposed algorithm present a better estimating performance than the traditional Root-MUSIC algorithm in the case of low SNR and few snapshots. The lake test verifies the engineering practicability.